BReHSC_L_50HZ

Series e-HSCDOUBLE SUCTION CENTRIFUGAL PUMPS - 50 HZ

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300

200

140100

50

30

20

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314 20 30 50 100 200 300 400 600 1000 2000 3000 4000 6000

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Series e-HSC1480 RPM

Flow (m3/h)

65-270

100-410

150-170 200-200 250-200

300-225

300-255

350-300400-340

450-390

200-250125-225125-245

80-215

80-345

80-285100-260

100-325150-355

125-300200-345

150-300

80-315

150-455

125-390 200-425

300-330

150-560

200-655

125-475250-480

250-390

300-450350-385 500-450

400-580300-550

350-450

350-530400-525

350-690300-705

200-530

250-610

50 Cycle Performance Range - 4 Pole

Designed and manufactured by the global leader in hydronic pump technology, the new Series e-HSC double suction pump provides engineers, contractors, and building owners a more powerful, serviceable, and efficient solution for a wide range of critical HVAC applications.

Features & benefits• Longer running life: thanks

to a shorter shaft that reduces vibrations, this pump can run up to 3x as long (100,000 hours within the preferred operating range) before the bearings need to be changed.

• More powerful: with a flow rate of up to 5,000 m3/hr the new e-HSC can easily handle large capacity systems and higher head.

• Ease of serviceability: to save time and reduce downtime, the mechanical seal and bearings can be easily accessed without opening the upper casing. And with the standard spacer coupling, both can be changed easily.

• Suitable for any installation: the design of the seal chamber and mechanical seals works with any incoming pressure and eliminates the need for an external flushing solution.

• Peace of mind: backed by Xylem’s responsive, knowledgeable distribution network, this pump offers the reliable service and rugged engineering you expect from the world’s leading water technology company.

• More efficient: each model has been optimized to balance efficiency and suction head requirements, and the completeness of the range means that there is a pump for every flow requirement within 10% of BEP.

Each of these pumps has two distinct impeller designs - i.e. the 80-315 model is also available as 80-300. See individual curves for details.

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Series e-HSC2970 RPM

Flow (m3/h)

65-270

80-215

80-315100-325

125-245150-280

125-30080-285

100-260

50 Cycle Performance Range - 6 Pole 300

200

140100

50

30

20

10

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3

114 20 30 50 100 200 300 400 600 1000 2000 3000 4000 6000

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s)Series e-HSC980 RPM

Flow (m3/h)

65-270

100-410

150-170 200-200250-200

300-225

300-255

350-300400-340

450-390

200-250125-225125-245

80-215

80-345

80-285100-260

100-325150-355

125-300200-345

150-30080-315

150-455

125-390 200-425

300-330

150-560

200-655

125-475250-480

250-390

300-450

350-385 500-450

400-580300-550

350-450

350-530400-525

350-690300-705

200-530

250-610

50 Cycle Performance Range - 2 Pole

Each of these pumps has two distinct impeller designs - i.e. the 80-315 model is also available as 80-300. See individual curves for details.

Each of these pumps has two distinct impeller designs - i.e. the 80-315 model is also available as 80-300. See individual curves for details.

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Mechanical Seals Mounted on Shaft

Mechanical Seals

MR1 Metric Metal Pusher Seal• Balanced high pressure execution• up to 31 bar (450 psi)1

• -20 to 121°C (-4°F to 250°F) temperature range

MR2 Metric Rubber Bellow Seal• Standard option unbalanced execution• up to 16 bar (232 psi)1

• -20 to 121°C (-4°F to 250°F) temperature range

*Denotes optional part with a standard material configuration

PART NAME MATERIAL

Casing AssemblyCast or Ductile Iron (ASTM A48 NO.35/ASTM A536 65-45-12)

Casing Gasket (Suction) Fiber (non-asbestos)

Casing Gasket (Discharge) Fiber (non-asbestos)

Shaft Stainless Steel 420

Bearing Housings Cast Iron (ASTM A48 No.30)

Bearings Steel

Stuffing Boxes Cast Iron (ASTM A48 No.35)

Lip Seals Rubber (NBR)

Mechanical Seals Carbon, SiC, EPDM

Bolts Steel

Pipe Plugs Steel

Key, Impeller Steel

Key, Coupling Steel

“O” Rings Rubber (FKM)

Casing Wear Rings* Bronze (ASTM B584 C90300)

Impeller Wear Rings* ASTM A743 Stainless Steel 304 (CF8)

Bearing Glands Cast Iron (ASTM A48 No.35)

Tapered Pins Steel

Impeller ASTM A743 Stainless Steel 304 (CF8)

Retaining Ring (Impeller) Stainless Steel 304

Shoulder Rings Steel

Series e-HSC Pump Standard Materials of Construction

MR1/MR2 Material Configurations1. Carbon/Silicon Carbide/EPDM2,3

2. Silicon Carbide/Silicon Carbide/EPDM4

3. Carbon/Silicon Carbide/FKM4

4. Silicon Carbide/Silicon Carbide/FKM4

Notes:1Denotes working pressure seal can withstand2Standard material configuration for MR1 and MR2 seal type3Optional MR1 seal material configuration 4Optional MR1 material configuration

MR2 Metric Rubber Bellow Seal Cross-section

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Internally Self-Flushing Seal

The e-HSC pump features internally self-flushing mechanical seals. This design, an industry standard, ensures maximum seal life lubrication, heat dissipation and debris removal – all without vulnerable, external flush lines and filter kits that can clog and result in seal failure. With an internally self-flushing seal design, as much as 25% of the total pump flow continuously flushes the seal faces compared to the few gpm a conventional stuffing box mounted mechanical seal receives. This design keeps seals cooler and cleaner – resulting in longer mechanical seal life.

Optional Materials of Construction

e-HSC Pump Technical Overview

Case Operating Pressures• Cast Iron: 16 bar (232 psi)• Ductile Iron: 25 and 31 bar (362 and 450 psi)2

Fluid Temperature Range• -20 to 121°C (-4 to 250°F)

Flange Specifications• DIN 16/25/40, EN 1092-1• ASME/ANSI B16.1, 125/250#3

1Optional material2Limited offering for 31 bar (450 psi) rating3Optional drilling specification

COMPONENT OPTIONAL MATERIAL CONFIGURATIONS

Shaft Duplex 2205

Impeller Stainless Steel 316 Bronze C87600

Impeller Wear Ring Stainless Steel 316 Bronze C87600

Casing Wear Ring Stainless Steel 4201 Stainless Steel Duplex Nitronic 601

The e-HSC pump has the flexibility to meet a variety of needs.

Impeller and impeller wear ring materials must always match.

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Motor Specifications & Drives

Couplings

Baseframe & Coupling Guard

Standard Motor Offerings• IE3 Efficiency• IP55 protection degree and IPX5 as electro-pump• Max 3-phase ambient temperature: 40ºC (104°F)• Totally Enclosed Fan Cooled (TEFC) enclosure• Class F insulation• Voltages: 3 x 400 V• Poles: 2, 4 and 6

Optional Offerings• Open Drip Proof (ODP) enclosure• PTC/RTD Sensors• Inverter Ready

Technologic® IPC Drive Options• 1.5/125 & 150/600 hp ranges• Temperature rating: -10°C to 45°C (14°F to 113°F)• Built-in BACnet, Modbus RTU, N2 Metasys FLN• Standard mains disconnect• 2 analog inputs, 1 analog ouput• 4 digital inputs, 2 digital outputs• Optional bypass for UL TYPE 1, and TYPE 1,12, 3R and 4X enclosures

ITEM FEATURES

BaseframeGroutedFormed steel frameAlignment Jacking screws

Coupling Guard ANSI/OSHA/ISO/CE compliant

Drip Pan (Optional) Galvanized steel

Alignment screws only available for 215 frame size and greater.Drip pan extends bearing to bearing.

1Only standard for HV motors

COUPLING TYPE STANDARD OPTIONAL

Non-Spacer Curved Jaw Falk Steelflex® Falk Gear Type Duraflex®

Spacer Flexible Disc1 Falk Steelflex® Falk Gear Type Duraflex®

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Optimal Standard Features

• Designed for ease of maintenance with product information, maintenance kits, and servicing videos readily available.

• Short shaft design ensures less deflection and longer bearing life.

• Easy to commission with a free extra year of warranty upon pump registration.

• Vibration, temperature and pressure ports standard for easy monitoring.

• Side accessible bearings and seals for single technician service.

Pressure

Vibration (Axis 1)

Temperature

Vibration (Axis 2)

Lowara Engineering Specification for Series e-HSC Base Mounted Double-Suction PumpsA. Manufacturer:1. Contractor shall furnish and install new double suction horizontal split

case pumps for chilled water and hot water heating systems as indicated on the drawings. Pumps shall be as manufactured by Lowara

under base bid. Equivalent units as manufactured by others may be submitted as deduct alternates. Pumps shall meet types, sizes, capacities, and characteristics as scheduled on the Equipment Schedule drawings.

B. Double Suction, Horizontal Split Case Pump (Base Mounted): 1. The pumps shall be long coupled, base mounted, single stage, double

suction, horizontally split case design, in cast iron stainless fitted construction specifically designed for quiet operation. Suitable standard operations at 250°F/120°C (and 175 psig/16 bar working pressure or optional operations at up to 300°F/150°C and 400 or 450 psig/25 bar or 31 bar working pressures. Above 400 psig/25 bar casing material is defaulted to ductile iron. Working pressures shall not be de-rated at temperatures up to 250°F/120°C. The pump internals shall be capable of being serviced without disturbing piping connections or electrical motor connections, and the pump’s internal seals and bearings shall be serviceable without disturbing the upper casing half when maximum working pressure

is less than or equal to 175 psig/16 bar. 2. A bearing housing shall supply support for a pair of heavy-duty

regreaseable ball bearings. An inboard single row bearing shall absorb thermal expansive forces while an outboard single row bearing shall be clamped in place to absorb both radial and thrust loads and keep the rotating element in proper axial alignment. Bearings shall be replaceable without disturbing the system piping, the upper casing half, and shall be regreaseable without removal of the bearings from the bearing housing. Ratio of length to diameter of the shaft design shall be no greater than 14 to minimize shaft deflection and maximize bearing and seal lives.

3. The pump shaft shall be a solid heat treated 420 stainless steel shaft. 4. Pump shall be equipped with a pair of internally self flushing mechanical

seal assemblies in direct contact with the pump shaft. Seal assemblies shall be unbalanced elastomeric seals having a stainless steel spring, and be of a carbon face rotating against a stationary silicon carbide face with an EPDM elastomeric bellow. Mechanical seals shall be replaceable without disturbing the upper casing half and system piping when suction pressure less than or equal to 175 psi (12 bar).

5. Impeller shall be of the enclosed double suction type made of 304 SS, both hydraulically and dynamically balanced to grade G6.3, keyed to the shaft and fixed in the axial position by retaining ring.

6. A flexible spacer type coupling, capable of absorbing torsional vibration, shall be employed between the pump and motor. On variable speed applications the coupler sleeve shall not be constructed of a nylon material to maximize performance life.

7. An OSHA and ANSI rated coupling guard shall shield the coupling during operation. Coupler guard shall be dual rated ANSI B11.19, OSHA 1910.219 and CE compliant coupling guard and contain viewing windows for inspection of the coupling. No more than 0.25 inches (6mm) of either rotating assembly shall be visible beyond the coupling guard. Coupling guard shall have an adjustable mount to the baseplate. Coupling guard shall be provided with viewing slots for visibility of rotating coupling components during pump operation.

8. Pump volute shall be of a class 35 cast iron (rated for 175 psig/16 bar maximum working pressure) or class 65-45-12 ductile iron (rated for 400 or 450 psig/25 bar or 31 bar maximum working pressure) axially-split design with flanges (175 psig/16 bar casing drilled with 125# ANSI / PN 16 companion flanges or optional 400 and 450 psig/25 bar and 31 bar casing working pressures are drilled with 250# ANSI / PN25 or

PN40 flanges) and mounting feet integral cast into the bottom half of the casing. Suction and discharge flanges shall be on a common centerline in both the horizontal and vertical planes, and the volute shall include: priming port, gauge ports on bosses near nozzles, and vent and drain ports. The upper half casing shall be capable of being removed without disturbing piping connections or electrical motor connections. Bearings housings should include ports for measurement of temperature and vibration (in two axes). Bearing temperature measurement shall be measured at outer raceway of the bearing.

9. The pump seal flushing shall be internal within the pump casing.10. Motors shall meet scheduled horsepower/kW, speed, voltage, and

enclosure design. Pump and motors shall be factory aligned, and shall be realigned after installation by the manufacturer’s representative. Motors shall be non-overloading at any point on the pump curve within POR and shall meet NEMA/IEC specifications and conform to the standards outlined in EPACT 92.

11. Base plate shall be of structural steel or fabricated steel channel configuration fully enclosed at sides and ends, with securely welded cross members and fully open grouting area (for field grouting). The minimum base plate stiffness shall conform to ANSI/HI 1.3.8-2013 for Horizontal Baseplate Design standards. Base plate shall be fitted with dog-point jacking screws for horizontal adjustment only parallel and perpendicular to pump/motor shafts.

12. Pump rotation shall be right-hand or left-hand with respect to the discharge flange as viewed from the pump’s outboard/non-drive end.

13. The pump(s) selected shall conform to ANSI/HI 9.6.3.1-2017 standards for Preferred Operating Region (POR) unless otherwise approved by the engineer. The pump NPSH shall conform to the ANSI/HI 9.6.1-2017 standards for Rotodynamic Pumps - Guideline for NPSH Margin.

14. The pump(s) vibration limits shall conform to Hydraulic Institute ANSI/HI 9.6.4-2016 standard for Rotodynamic Pumps for Vibration Measurements and Allowable Values, for recommended acceptable unfiltered field vibration limits for pumps with rolling contact bearings.

15. Pump manufacturer shall be ISO-9001 certified. 16. Each pump shall be factory hydrostatically tested to 1.5 times

maximum working pressure for 10 minutes per Hydraulic Institute standards and name-plated before shipment. It shall then be thoroughly cleaned and painted with at least one coat of high grade paint prior to shipment.

C. Accessories:1. Where noted on schedule pumps shall be provided with internal

bronze casing wear rings, special shaft materials, special impeller materials or impeller wear rings, or non-spacer couplings.

2. Where noted on schedule either unbalanced seals of Silicon carbide/silicon carbide/EPDM, Carbon/Tungsten carbide/EPDM, Carbon/Ceramic/EPDM, Carbon/silicon carbide/FKM, Silicon carbide/silicon carbide/FKM

3. Where noted on schedule pumping equipment may require one or all of the following tests: Certified Lab tests (unwitnessed or witnessed), NPSHR, or temperature testing.

4. Where noted on schedule pumping equipment may require non-grouted, drip pan, solid top, or drip rim base plates.5. Where noted on schedule pump may require special coating (internal

or external).6. Where noted on schedule impeller or rotating element may require

balancing to G2.5 (impeller) or G1.0 (rotating element).

Series e-HSC pumps are manufactured by Lowara, a Xylem, Inc. brand.

Legal head officeXylem Water Solutions Italia Srl

Via Gioacchino Rossini 1/A 20020 – Lainate (MI) - ItalyTel. (+39) 02 90358.1Fax (+39) 02 9019990 www.xylemwatersolutions.com

For information and technical support Xylem Service Italia Srl

Via Dottor Vittorio Lombardi 1436075 - Montecchio Maggiore (VI) - Italy Tel. (+39) 0444 707111Fax (+39) 0444 491043 www.xylem.com/lowara

Lowara is a trademark of Xylem Inc. or one of its subsidiaries. Falk Steelflex is a trademark of Rexnord Inc. Duraflex is trademarked. All other trademarks or registered trademarks are property of their respective owners.

© 2019 Xylem Inc. BReHSC_L_50HZ August 2019